CN102745876B - Sludge treatment method for coordinating relationship between centralized urban sewage plants and scattered urban sewage plants - Google Patents
Sludge treatment method for coordinating relationship between centralized urban sewage plants and scattered urban sewage plants Download PDFInfo
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- CN102745876B CN102745876B CN201210284191.XA CN201210284191A CN102745876B CN 102745876 B CN102745876 B CN 102745876B CN 201210284191 A CN201210284191 A CN 201210284191A CN 102745876 B CN102745876 B CN 102745876B
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Abstract
The invention discloses a sludge treatment method for scientifically coordinating a relationship between centralized urban sewage plants and scattered urban sewage plants. According to the sludge treatment method, the relationship between the centralized urban sewage plants and the scattered urban sewage plants is scientifically coordinated, actual conditions of local geographic climates, landforms, river network distribution, water resources and technological and economical conditions are fully considered, and the scattered urban sewage plants are developed according to local conditions and beneficially supplement the centralized urban sewage plants, so that a plurality of problems existing in urban roads and traffic, various infrastructures along pipeline networks, buildings along the pipeline networks, urban appearance, environmental sanitation, urban air pollution and water resource utilization are avoided, simultaneously, excess sludge generated by the scattered urban sewage plants is discharged into the centralized urban sewage plants and used as a biological denitrification carbon source, and centralized treatment of the sludge of the urban sewage treatment plants is promoted.
Description
Technical field
The present invention relates to the sludge treatment method of disposal of the centralized and distributing municipal wastewater treatment plant of a kind of Science and coordination.
Background technology
Fast development along with urbanization, city is rapidly to external expansion, the various newly-built communities in urban fringe or new district, hotel, amusement and recreation facility, institutions of higher education etc. are a large amount of to be built, urban wastewater discharge rises appreciably, if adopt centralized sewage disposal, need to extend the centralized sewage work in city and sewage network system thereof, not only need a large amount of construction investments, also need the original pipe network system upgrade transformation in city, and then to urban road and traffic, pipe network various Infrastructure along the line, pipe network buildings along the line and the city appearance of the city, environmental health, urban atmospheres etc. bring and have a strong impact on, some cities are affected by the big-and-middle-sized network of waterways, obvious morphologic prominence etc., and pipe network system construction investment and the working cost thereof of centralized sewage disposal are too high, the city that some water resourcess lack, as arid, semiarid zone, greenery patches, down town, wetland, lake etc. need a large amount of landscape waters, adopt centralized sewage disposal to be unfavorable for the comprehensive utilization of water resources, segment set Chinese style sewage treatment plant inflow carbon source is not enough, and denitrification biological denitrogenation effect is poor, and total nitrogen water outlet is not up to standard, needs external carbon source.How to improve treatment rate of domestic sewage, water conservation and water surrounding, and sewage recycling utilization has been become the departments such as city planning, urban construction, environment protection, Water resources development must in the face of and problem in the urgent need to address.Suit measures to local conditions, greatly develop decentralized type sewage treatment system, make it to become the effective and useful key point that has become future city sewage disposal of supplementing of centralized Sewage treatment systems.
It is from far-off regions that decentralized type sewage is processed the city referring in relatively little region or the relatively dispersion of living, because restricted by geography and climate, topography and geomorphology, network of waterways distribution, water resources and technology, economic factors, should not carry out centralized sewage work, and with small-sized, the miniature sewage treatment facility of building nearby to zonule, local even community wastewater collect and process.
Decentralized type sewage treatment plant is suitable for receiving even community wastewater of zonule, local, can avoid geography and climate, topography and geomorphology, network of waterways distribution, water resources and technology, economic factors restriction.Decentralized type sewage is processed and should be required to process according to " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002).When sewage disposal plant effluent is introduced dilution capacity compare little He lake as purposes such as townscape water and general reuse waters, primary standard A standard is carried out in sewage disposal; When sewage disposal plant effluent enters surface water III class function waters (except the drinking water source protective belt and Swimming area of delimitation), seawater two class function waters He Hu and Ku sealing or semiclosed waters, carry out the B standard of primary standard; When urban wastewater treatment firm water outlet enters GB3838 surface water IV, V class function waters or GB3097 seawater three, four class function marine sites, carry out secondary standard.After sewage disposal, form the excess sludge (water ratio is more than 99%) of 0.5% left and right, can enter by mud pumping plant and pipeline the network of drains of the centralized sewage work in city nearby, excess sludge is introduced to centralized sewage work as the carbon source of biological denitrificaion, thereby the construction investment and the sludge treatment that reduce decentralized type sewage treatment plant are disposed risk, sludge of sewage treatment plant is focused on, the city planning of avoiding the upgrading of centralized sewage work pipe network system to bring, urban construction, environment protection, the problems such as Water resources development, also be beneficial to the disposal that focuses on of sludge from wastewater treatment plant.
Summary of the invention
The object of the invention is to be subject to urban region or the local of geography and climate, topography and geomorphology, network of waterways distribution, water resources and technology, economic factors restriction, suitably develop decentralized type sewage treatment plant, and the excess sludge of decentralized type sewage processing generation is entered to centralized sewage work as biological denitrification carbon source, make sludge from wastewater treatment plant focus on disposal.
Concrete steps of the present invention are as follows:
(1) according to city planning, municipal water prevention and cure of pollution planning, treatment planning and city water resource planning; determine the service range of built centralized municipal sewage plant network of drains; delimit the service range of decentralized type sewage yet to be built treatment plant, determine decentralized type sewage treatment plant factory site, construction scale, emission standard and degree for the treatment of, discharge outlet position, water environment protection and recycling of water resource requirement, sewerage pipeline network layout.
(2) amount of inlet water based on decentralized type sewage treatment plant, water quality, emission standard, water environment protection and recycling of water resource requirement, decentralized type sewage treatment plant periphery ecological environmental protection requirement science are selected the technical process of decentralized type sewage treatment plant, technical data, structures and support equipment thereof, carry out engineering design; ，Dui decentralized type sewage treatment plant water exhaust system carries out engineering design simultaneously.
(3) surplus sludge volume that moves towards the water treatment process design discharge of ，Bing An decentralized type sewage treatment plant based on centralized municipal sewage plant sewerage pipeline network and factory site choose reasonable decentralized type sewage treatment plant of decentralized type sewage treatment plant excess sludge discharge pipeline is determined pipe network caliber and sludge pump model; Surplus sludge volume is generally 0.3%～1% of designing treatment scale; Decentralized type sewage treatment plant real surplus sludge discharge is relevant with sewage treatment plant inflow water quality, the water yield and Technology thereof; Sewage disposal degree is higher, and excess sludge generation is just fewer; Influent quality organic concentration is higher, and the surplus sludge volume producing is just larger; Biological phosphate-eliminating and chemical dephosphorization amount are larger, and the surplus sludge volume producing is just larger; Amount of inlet water is larger, and the surplus sludge volume producing is just more.
(4) decentralized type sewage treatment plant does not establish sludge treating system, and the excess sludge that the sewage disposal of decentralized type sewage treatment plant produces directly enters the network of drains of centralized municipal sewage plant nearby by excess sludge discharge pipe, makes it to focus on; For the generation of preventing and remedying pollution, excess sludge adopts penstock to carry.
Described centralized sewage work refers to based on city planning, urban construction, environment protection, Water resources development requirement and build the big-and-middle-sized sewage work in urban river or downstream, water resource conservation zone in.
Described decentralized type sewage treatment plant refers to and is subject to the useful and effectively supplementary of the urban region of geography and climate, topography and geomorphology, network of waterways distribution, water resources and technology, economic factors restriction or the small-sized and centralized sewage work in miniature sewage treatment facility ，Shi city that local is built.
Described decentralized type sewage is processed and is referred to the sewage disposal based on " urban wastewater treatment firm pollutant emission standard " (GB 18918-2002).When sewage disposal plant effluent is introduced dilution capacity compare little He lake as purposes such as townscape water and general reuse waters, primary standard A standard is carried out in sewage disposal; When sewage disposal plant effluent enters surface water III class function waters (except the drinking water source protective belt and Swimming area of delimitation), seawater two class function waters He Hu and Ku sealing or semiclosed waters, carry out the B standard of primary standard; When urban wastewater treatment firm water outlet enters GB3838 surface water IV, V class function waters or GB3097 seawater three and four class function marine sites, carry out secondary standard.
Described decentralized type sewage treatment plant excess sludge refer to form after the biological treatment of decentralized type sewage treatment plant be equivalent to flooding quantity 0.5% left and right, water ratio at biological sludge that more than 99% must disposal.
Described decentralized type sewage treatment plant excess sludge is processed disposal options and is referred to that the excess sludge of decentralized type sewage treatment plant enters centralized sewage work pipe network nearby by mud pumping plant, makes sludge hydrolytic become biological denitrification carbon source or enter centralized sewage work to focus on disposal.
The invention has the advantages that:
(1) Science and coordination the relation processed of centralized sewage disposal and decentralized type sewage, the practical situation such as local geography and climate, topography and geomorphology, network of waterways distribution, water resources and technology, economic condition have fully been taken into account, suit measures to local conditions suitably to develop decentralized type sewage treatment plant, make it to become the useful of centralized sewage work and supplement.
(2) suit measures to local conditions to develop decentralized type sewage treatment plant, avoided because developing many difficult problems such as urban road that centralized sewage treatment facility, sewerage pipeline network upgrading bring and traffic, pipe network various Infrastructure along the line, pipe network buildings along the line and the city appearance of the city, environmental health, urban atmospheric pollution, water resources utilization.
(3) decentralized type sewage is processed to the excess sludge producing and enter centralized sewage work as biological denitrification carbon source, be beneficial to sludge from wastewater treatment plant and focus on and dispose.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiment 1:
Certain provincial capital of south, quick propelling along with urbanization, peripheral in old urban area, littoral extensive newly-built Urban New District, River upstream, city and some Big Residential Districts, if adopt centralized sewage work to process sanitary sewage, need the original draining backbone network in whole upgradings city, cause downtown roads, the destruction of pipe network various Infrastructure along the line and buildings, construction cost is extremely high, and can cause the comparatively serious city appearance of the city, environmental health impact and urban atmospheric pollution, also be unfavorable for the water resources utilization of this down town water body in lake, near newly-built Liao Erzuo decentralized type sewage treatment plant lake, down town so suit measures to local conditions, construction scale is 50,000 m
3/ d and 30,000 m
3/ d, technical process adopts A
2/ O technique, effluent adopting one-level A standard, tail water enters lake, urban district and makes urban look water after disinfection by ultraviolet light, and decentralized type sewage treatment plant excess sludge enters centralized sewage work pipe network nearby by mud pumping plant, focuses on.
Embodiment 2:
Certain city, south, be positioned at the Zhujiang River two confluences, master stream, newly built city district is not only separated by roomy river course, the topography and geomorphology also being risen and fallen has a strong impact on, if adopt centralized Sewage treatment systems, need to repeatedly pass through river, city and lay pipe network, builds a large amount of pumping plants that promote, and original network of drains is carried out to upgrading, pipe network excavation cost of erection and removal damages are too high, so the burst of suiting measures to local conditions is built Liao Erzuo decentralized type sewage treatment plant in newly built city district, construction scale is 50,000 m
3/ d, technical process adopts A
2/ O technique, effluent adopting one-level A standard, tail water enters tributary nearby after disinfection by ultraviolet light, and decentralized type sewage treatment plant excess sludge enters centralized sewage work pipe network nearby by mud pumping plant, focuses on.
Claims (1)
1. coordinate a sludge treatment method of disposal for centralized and distributing municipal wastewater treatment plant relation, it is characterized in that concrete steps are:
(1) according to city planning, municipal water prevention and cure of pollution planning, treatment planning and city water resource planning, determine the service range of built centralized municipal sewage plant network of drains, delimit the service range of decentralized type sewage yet to be built treatment plant, determine decentralized type sewage treatment plant factory site, construction scale, emission standard and degree for the treatment of, discharge outlet position, water environment protection and recycling of water resource requirement and sewerage pipeline network layout;
(2) amount of inlet water based on decentralized type sewage treatment plant, water quality, emission standard, water environment protection and recycling of water resource require and the periphery ecological environmental protection requirement of decentralized type sewage treatment plant, science is selected the technical process of decentralized type sewage treatment plant, technical data, structures and support equipment thereof, carries out engineering design; ，Dui decentralized type sewage treatment plant water exhaust system carries out engineering design simultaneously;
(3) surplus sludge volume that moves towards the water treatment process design discharge of ，Bing An decentralized type sewage treatment plant based on centralized municipal sewage plant sewerage pipeline network and factory site choose reasonable decentralized type sewage treatment plant of decentralized type sewage treatment plant excess sludge discharge pipeline is determined pipe network caliber and sludge pump model; Surplus sludge volume is generally 0.3%～1% of designing treatment scale; Decentralized type sewage treatment plant real surplus sludge discharge is relevant with sewage treatment plant inflow water quality, the water yield and Technology thereof; Sewage disposal degree is higher, and excess sludge generation is just fewer; Influent quality organic concentration is higher, and the surplus sludge volume producing is just larger; Biological phosphate-eliminating and chemical dephosphorization amount are larger, and the surplus sludge volume producing is just larger; Amount of inlet water is larger, and the surplus sludge volume producing is just more;
(4) decentralized type sewage treatment plant does not establish sludge treating system, and the excess sludge that the sewage disposal of decentralized type sewage treatment plant produces directly enters the network of drains of centralized municipal sewage plant nearby by excess sludge discharge pipe, makes it to focus on; For the generation of preventing and remedying pollution, excess sludge adopts penstock to carry;
Described centralized sewage work refers to the big-and-middle-sized sewage work that build urban river or downstream, water resource conservation zone based on city planning, urban construction, environment protection and Water resources development requirement in;
Described decentralized type sewage treatment plant refers to and is subject to the useful and effectively supplementary of the urban region of geography and climate, topography and geomorphology, network of waterways distribution, water resources and technology, economic factors restriction or the small-sized and centralized sewage work in miniature sewage treatment facility ，Shi city that local is built;
Described decentralized type sewage is processed and is referred to the sewage disposal based on " urban wastewater treatment firm pollutant emission standard " GB 18918-2002; When sewage disposal plant effluent is introduced dilution capacity compare little He lake as townscape water and general reuse water purposes, primary standard A standard is carried out in sewage disposal; When sewage disposal plant effluent enters surface water III class function waters, seawater two class function waters He Hu and Ku sealing or semiclosed waters, carry out the B standard of primary standard; When urban wastewater treatment firm water outlet enters GB3838 surface water IV, V class function waters or GB3097 seawater three and four class function marine sites, carry out secondary standard;
Described decentralized type sewage treatment plant excess sludge refer to form after the biological treatment of decentralized type sewage treatment plant be equivalent to flooding quantity 0.5%, water ratio at biological sludge that more than 99% must disposal;
Described decentralized type sewage treatment plant excess sludge is processed disposal options and is referred to that the excess sludge of decentralized type sewage treatment plant enters centralized sewage work pipe network nearby by mud pumping plant, makes sludge hydrolytic become biological denitrification carbon source or enter centralized sewage work to focus on disposal.
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| CN102745876B true CN102745876B (en) | 2014-01-15 |
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| CN110264052B (en) * | 2019-06-06 | 2023-05-30 | 郑州市污水净化有限公司 | Urban river water quality improving system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032289A (en) * | 1988-08-12 | 1991-07-16 | Martineau Andre P | In situ off-shore processing of urban sewage without using or contaminating urban land |
| CN101007674A (en) * | 2007-01-25 | 2007-08-01 | 河北农业大学 | City ditch polluted water in situ ecological purifying processing device |
| CN101096283A (en) * | 2007-05-29 | 2008-01-02 | 武汉大学 | Farmer life sewage treatment system using scattered fields with landscape function |
| CN101328703A (en) * | 2007-06-18 | 2008-12-24 | 粟文钊 | Design method of municipal traffic construction, underground pipeline layout and related fields |
| CN101704608A (en) * | 2009-11-19 | 2010-05-12 | 浙江工业大学 | Distributed sewage advanced treatment device with sludge treatment and method thereof |
-
2012
- 2012-08-12 CN CN201210284191.XA patent/CN102745876B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5032289A (en) * | 1988-08-12 | 1991-07-16 | Martineau Andre P | In situ off-shore processing of urban sewage without using or contaminating urban land |
| CN101007674A (en) * | 2007-01-25 | 2007-08-01 | 河北农业大学 | City ditch polluted water in situ ecological purifying processing device |
| CN101096283A (en) * | 2007-05-29 | 2008-01-02 | 武汉大学 | Farmer life sewage treatment system using scattered fields with landscape function |
| CN101328703A (en) * | 2007-06-18 | 2008-12-24 | 粟文钊 | Design method of municipal traffic construction, underground pipeline layout and related fields |
| CN101704608A (en) * | 2009-11-19 | 2010-05-12 | 浙江工业大学 | Distributed sewage advanced treatment device with sludge treatment and method thereof |
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Owner name: HUAHONG WATER GROUP CO., LTD. Free format text: FORMER OWNER: GUILIN UNIVERSITY OF TECHNOLOGY Effective date: 20150525 |
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Address after: 530000 Nanning Qingxiu District, Guangxi Zhuang Autonomous Region, No. 30 Shuangyong Road, Building A, 29, Mingdu Plaza, Nanhu Patentee after: Huahong water affairs group Limited by Share Ltd Address before: Support 530028 Nanning Road, the Guangxi Zhuang Autonomous Region A Nanhu maintown Plaza No. 30 Building 29 layer Patentee before: Huahong Water Affairs Group Co., Ltd. |