China - Liaoning Environmental Project : environmental assessment (Vol. 11 of 12) : Report on EI : no. 1 sewage treatment plant in West of Anshan City

Environmental Assessment/Analysis Reports ___ __ Report E0040 China - Liaoning Environmental Proj ect EA Category B Environmental Assessment 11 of 12 September 1993 This report has been prepared by the Borrower or its Consultant  EA2EU JUN O 9 19 RECEnrE Environmental Protection Project ; Of Liaoning Province By Loan From World Bank No.1 Seware Treatment Plant in West of Anshan City Report Of Environment Impact Bei"ing Environmental Impact Assesmment Corp. Beijing Sep. , 1992 recvcled paper r,lug% and rnginnnnrntr  Manager: Mr. Wu Zhicheng Project Manager: Mr. Li Youliang Technical Manager: Mr. Song Weimin Ms. Zhang Hong Reviewer: Mr. Li Zaigong Drawer-up: Mr. Song Weimin Ms. Zhang Hong Beijing Environmental Impact Assessment Corp. Beijing Sep., 1992 recycled paper truIog afnd pnminonment  Participators and Their Occupation Name Occupation Speciality Mr. Wu Zhicheng Senior Engineer Environment project Mr. Li Zaigong Senior Engineer Environment Assessment Mr. Song Weimin Senior Engineer Water Supply and Drainage Mr. Yang Chenjun Senior Engineer Noise Control Mr. Li Youliang Seni-or Engineer Environment Management Ms. Qi Guoqin Engineer Environment Project Ms. Zhang Hong Engineer - Environment Project Mr. Zhang Liuling Engineer Environment Assessment Ms. Hu Hemei Engineer Environment Ecology Mr. Su Yi Engineer Environment Chemistry recycled Daper emog unimd envihmnment  Content Page 1. Preface .............................................. el 1.1 Purpose and Substance of Assessment .....................3 1.2 Requirements and Basis for Report .....................4 of Project Environment Impact 1.3 Criteria, Scope and Factors of ........................ 5 Environment Impact Assessment 1.4 Characters of Impact Resulting ........................ 7 from Construction of Sewage Treatment Plant 1.5 Main Environmenital Objects in ......................... 8 Area of STP to be controlled 2.. General Introduction of Project ..... Q, ................. 8 2.1 Title and Purpose ................ .. ........ 8 2.2 Project Site and Geographical Position; ............... 8 2.3 Capacity and Occupied Area of STP ..................... 9 2.4 Investment in Project ....................... .......... . 9 2.5 Main Process of STP ........................ .... . .... .9 2.6 Management and Employees of STP ....................... 9 3. Role Played by No.1 STP in Anshan .................... 10 Water Net Comprehensive Pollution Control 3.1 Water Net is Anshan district ......................... 10 3.2 Existing Sewage Source and Situation . ................. 10 in Anshan 3.3 Determination of First Phase Project ................. 11 of Anshan Water Net Pollution Control recvcled gmDer e"&1oz% and nrin.nment  4. Project Analysis ............... ............. . 17 4.1 Diversion Works...... ...... a .............................. * * . ...17 4.2 Sewage Treatment Plant (STP) ......................... 18 4.3 Water Dispatch Works ............................................ . 20 4.4 Research on Process Flow Sheet of STP ................ 20 4.5 Impact Factors of STP on Environment .................. 32 4.6 Water Balance of STP Under Different ................. 34 Conditions 4.7 STP Construction Plan and Expected Effects ........... 35 4.8 Reasonability Analysis of STP ...........*...........;38 4.9 Analysis of Sludge From STP ........................... 42 4.10 STP Area Rainwater Collecting System ................. 45 4.11 Management and Supervision of STP .................... 45 5. Existing Environment Situation . . 46 of Project Area 5.1 Natural Environment .................... ............. . 46 5.2 Natural Living Things .. 50 5.3 Socioeconomic Environment ........ .......... ............ ...... . 50 6. Present situation about the quality..................52 of surface water, underground water, air, soil and crops 6.1 Surface water ...... ................... 52 6.2 Underground water . ......................... .... 54 6.3 Atmosphere ........ ........ ............................ . 56 6.4 Soil crops ........................................... 58 6.5 Investigation of people health ....................... 62 6.6 Comprehensive comment of present . .................... 62 situation recvcled Paper Cfluz% and %ir.mment  7. Forecasting and assessment of .... 64 environmental impact of the construction project 7.1 Forecasting on change of water ........................64 quality on the Yunliang river and Anshan section of Taizi river after putting into operation of the waste water treatment plant 7.2 Influence of solid wastes on environment ............. 72 7.3 Influence of air pollution from waste ................ 79 water treatment plant on environment 7.4 Forecasting and asse3sment of impact ................. 89 of noise emitted from waste water treatment plant on environment 7.5 Analysis of influence of chemicals ................... 95 used for cleaning the water by waste water treatment plant 7.6 Preliminary analysis of influence of ......... 97 waste water treatment plant during construction period on environment 7.7 Influence of built project on ........................ 98 terrestrial plant and underwater 7.8 Influence of built project on ........................ 99 utilization of land, social economy and policy of the state 8. Economic, social and environment ............ 100 benefits of the built project recvcled oaper Wbl(vE and Pn%irn.nn-.o  8.1 Analysis of economic benefits ...... 100 of the project 8.2 Analysis on social benefits ......................... 107 of the built project 8.3 Analysis of environmental ........................... 108 benefits of the project 9. Analysis of accidents .................... ............ 109 10. Counter measures for alleviating of ................. 110 environmental impact of the project 11. Analysis and control counter measures ............... 116 of main pollution source of waste water collection system of the waste water treatment plant 11.1 Analysis of main pollution source ................... 116 11.2 Control counter measures of main ...... 120 waste water sources 12. -Set up of organization and personal ................. 121 training for waste water treatment plant 12.1 Production features .......................... 121 12.2 Requirement on-operation management ................. 122 12.3 Set up of organization .............................. 122 12.4 Fixed numbers of workers and staffs ................. 123 of the plant 12.5 Plan for training of personnel ...................... 124 13. Monitoring system and communication ................. 124 system 13.1 Monitoring purpose ............................ ...... 124 recvcled paper enula' end envinnment  13.2 Communication System ................................ 128 14. Reliability Analysis of Normal ......................129 Operation of STP 15. Analysis of Potential Impacts .......................132 16. Analysis of Alternatives . ................... 134 17. Comprehensive Assessment of STP ....................138 18. Conclusion of Assessment.. 141 18.1 Feasibility Study of STP .141 18.2 Conclusion of Assessment .141 19. Public Participant .147 recycled oaper cr,Iogz and emirenmrnt  I. Preface Anshan city is one of the 6 main cities which are located in the Hun Taizi river valley Liaoning Province. In the district of Anshan, from east to west there are 3 rivers in the Taizi river valley, i.e. Nansha river, Yunlian river and Yangliu river. They join Taizi river at Xiakouzi, Dataizi and Xintaizi .in Anshan respectively. Anshan is a heavy industry district and is famous for its iron and steel industries, 76% of the city sewage comes from industry. Now, the three rivers and the section of Taizi river are heavily polluted. Along with the rapid development of industries, the water source in this area trends to be polluted further, not to say that there is a shortage of the water source. From the viewpoint of flowrate, quantity of pollutants discharged and extent of pollution, the Yunliang river is in first place among the 3 rivers. The pollution source of Yunliang river is concentrated in it's upper reaches mainly Xibugou (the western channel). The pollution of Xibugou has contaminated the underground water and the farm soil nearby. Anshan is in shortage of water supply, it has been affecting the living standard of the local residents and the economic development of the area. The "Programme of Comprehensive Water Pollution Control in Anshan) (PCPP), made by the Anshan Government based on the plan of comprehensive pollution control of Hun river - and Taizi river valleys of Liaoning province, shows that, recycled paper 1 omz end enhinsnnemrr,  to solve the problem of pollution of the section of Taizi river in Anshan, the pollution of Xibugou must be treated first. Therefore, it is necessary to build up a water treatment plant in Xibugou. This water treatment plant, which is called No.1 Sewage. Treatment Plant (STP), is one of the main projects in Hui river and Taizi river valleys pollution control plan. Based on the result of study of the pollution control plan, the city construction and reconstruction projects office (CCRO) asked for loan from the World Bank for this project. After the delegation of World Bank visited Anshan, they decided to assign the STP project as the first phase project of sewage pollution treatment of Liaoning province, upon this base, "The Feasibility Study of Xibu No.1 Sewage Treatment Plant of Anshan" (STP) has been -prepared. Xibu No.1 Sewage Treatment Plant is a environmental control project. It will not only be a very important part in improvement of quality of the water in Yunliang river and the Anshan section of Taizi river, but also relate to the efficient utilization of water source in Anshan area and planning of environment projects. During the initial work of CCRO, on -the basis of document [Serial number: Guo-Huan Zi (1986) No.003] and relative regulations of the World Bank, the "Report of environmental impact assessment of Xibu No.1 sewage treatment plant project" is written by Beijing environmental Impact Assessment Co. according to the entrustment of Design and REsearch Institute of Anshan Iron & Steel Co. recvcled paper 2 Vrnols and wnwirannent  1.1 Purpose and Content of Assessment 1.1.1 Purpose of Assessment The No.1 Sewage Treatment Plant (STP) will be one of the important environment protection facilities in Anshan. It wi.l1 efficiently improve the district environment sanitation and control the water environment quality. However, the construction of this plant may have negative effect on the local environment, and the reuse of treated water will change the balance of the original water net. Besides, during the treatment, the separated sludge, if treate unproperly, will possibly cause the secondar pollution, and there will be atmospheric pollution noise and bad smell along with the operation of th plant. In the feasibility study, from the view point o environment control, a balance and adjustment work between the positive and negative impacts of this project must be made. 1.1.2 Content of Assessment By surveying and analyzing the existing water distribution in this area, where the project is located, and the environment quality, the quantitative assessment of the impact on the environment quality of the water net will be carried out. The qualitative analysis of underground water and soil will be carried out at the same time, because the surface water, underground water and soil are closely related to each other. Based on the features and the technoligical recvcled oaper 3 As and nnnnnrB 3  process flowsheet of the STP in' the feasibility, the extent of pollution and damage to the environment where the plant is built will be analyzed and predicted. Based on this, the measures to be taken in the project. feasibility study will be assessed to see whether they are effective and enough, so as to determine the reliability of the feasibility study. Alternatives or counter-measures of improvement will be put forward. t o From the view point of the features of the project, tjpl~ this assessment is mainly dealing with the surface water and at the same time, the consideration is also given to the underground water and soil. 1.2 Requirements and Basis for the Report of Project Environment Impact Assessment 1.2.1 Requirements As the No.1 Sewage Treatment Plant Project will be built with the loan from Bank of World, the assessment report must not only meet the relative laws and regulations of China and Liaoning province, but also meet the requirements of the outline of environment assessment made by the World Bank. 1.2.2 Basis (1) Regulations of Environmental Protection Managemelat of Construction Project. (2) Law of Water of PRC. (3) Law of Water Pollution Control of PRC. (4) Plan of Comprehensive Harness of Hun river and Taizi river valleys; recvcled Daper 4 eub'e and eminmnmmns  (5) Programme of Comprehensive Prevention of Water Net Pollution of Anshan; (6) "Approval of Assigning Xibu No.1 Sewage Treatment Plant of Anshan as short-term Project Built on Loan" issued by Anshan City Construction and Reconstruction Project Office on Feb. 24, 1988; (7) Feasibility Study of Xibu No.1 Sewage Treatment Plant of Anshan, which was submitted in 1991; (8) World Bank Technical Documentation No.139 - Environment Assessment Base Volume I; (9) World Bank Work Outline No.4, Appendix A - Requirements of Environment Assessment (OD401) (assessment is made based on Group B in Appendix A3), (10) Entrusting document of Environment Impact Assessment -- Design and Research Institute of Anshan Iron and Steel Co. (May, 1992) (11) Outline of Environment Impact Assessment of Xibu -No.1 Sewage Treatment Plant of Anshan (May, 1992) (12) Approval letter of Outline of Environment Impact Assessment of Xibu No.1 Sewage Treatment Plant of Anshan (Liao Huan Guan (1992] 023) issued by Liaoning Environment Protection Bureau. 1.3 Criteria, Scope and Factors of Environment Impact Assessment 1.3.1 Assessment Criteria (1) Target of Surface Water Programming in Near Future In 1995, the water quality of Anshan section of Taizi river will accord with "The Surface Water Quality recycled paper ruIlor and rnvinmnmenm 5  Standards Group V (GB3838-881", and that of Yunliang river will accord with Group I of Field Irrigation Water (GB5084-85). (2) Water discharged from No.1 STP will accord with Class II for.expanded and reconstructed projects specified in 'AC A Sewage and Waste Gas Discharge Standard in Liaoning ,^ + Province. (3) The atmosphere will accord with Class II of Atmosphere Environment Quality Standard (GB3095-82). (4) The underground water will accord with Sanitary Standard of Living and Drinking water (GB5749-85). - {5) The environment noise will meet the requirements of Industrial Enterprise Outside-boundary Noise Standard (GB12348-90). (6) The soil Up till now, China has not yet formally issued soil IL 0 assessment standard. So, the Background Values of Liao River plain and the district background values will be used to make comparison, analysis and assessment. 1.3.2 Scope (1) Surface Water The main assessment will be done for sewage of Xibugou Section while the general assessment and analysis will be done for Yunliang River and Ainshan section of Taizi River. (2) Underground water By the section of Yunliang River from Xibugou to Liujianfang , which is as long as approximately 14 km. recycled paper c ehos and enmiaunment - 6  (3) Atmosphere The area, with the No.1 STP in the center, includes the nearly places, such as Dayingpan, Xiaoyingpan, Wusantai and Lisantai. (4) Survey .of Population Health The total point is Sonsan sewage irrigation district.> (5) Soil and Crops The survey of soil and crops will be made in the sewage irrigation with Xibugou as the center, and 10,000 mu district in area. 1.3.3 Ident