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Municipal sewage treatment plant discharge water regeneration utilization apparatus and municipal sewage treatment plant discharge water regeneration utilization method

A municipal sewage and treatment plant technology, applied in the field of water pollution treatment, can solve the problems of temperature influence, large-scale site, high investment and operating costs, ammonia nitrogen, total nitrogen not up to standard, etc., to achieve simple operation, short production process, The effect of easy operation and control

Pending Publication Date: 2019-08-30
皓禹(厦门)环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the disadvantages of the existing sewage advanced treatment and recycling process that are either affected by air temperature, ammonia nitrogen and total nitrogen are not up to the standard when the water temperature is low in winter, or require a new large-area site, high investment and operating costs, and provide municipal sewage treatment plants. Device and method for recycling discharged water

Method used

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  • Municipal sewage treatment plant discharge water regeneration utilization apparatus and municipal sewage treatment plant discharge water regeneration utilization method
  • Municipal sewage treatment plant discharge water regeneration utilization apparatus and municipal sewage treatment plant discharge water regeneration utilization method
  • Municipal sewage treatment plant discharge water regeneration utilization apparatus and municipal sewage treatment plant discharge water regeneration utilization method

Examples

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Effect test

Embodiment 1

[0057] Renovation example of a sewage treatment plant that meets the first-level B discharge standard. After the secondary sedimentation tank of the original project, a lifting pump 1, an electrolysis machine 2, an ammonia nitrogen oxidation tank 3, a nitrate nitrogen reduction denitrification tank 4, and a coagulation sedimentation tank are added. 5; The structure of the electrolytic machine 2, the ammonia nitrogen oxidation pool 3, and the nitrate nitrogen reduction denitrification pool 4 is as follows figure 1 As shown, the discharge water of the first level B of the sewage plant is connected to the inlet of the electrolysis machine 3, the outlet water of the electrolysis machine 3 is connected to the water inlet of the ammonia nitrogen oxidation tank 3, and the outlet of the ammonia nitrogen oxidation tank 3 is the outlet of the nitrate nitrogen reduction denitrification tank 4 The inlet and the outlet of the nitrate nitrogen reduction and denitrification tank 4 are connec...

Embodiment 2

[0067] A retrofit example of a grade A sewage treatment plant in the south, adding an electrolysis machine 2, an ammonia nitrogen oxidation tank 3 and a nitrate nitrogen reduction denitrification tank 4 between the secondary sedimentation tank and the coagulation sedimentation tank of the original facility of the sewage treatment plant. The structures of electrolysis machine 2, ammonia nitrogen oxidation pool 3, and nitrate nitrogen reduction denitrification pool 4 are as follows: figure 1 As shown, the discharge water of level B of the sewage plant is connected to the inlet of the electrolysis machine 2, the effluent of the electrolysis machine 2 is connected to the inlet of the ammonia nitrogen oxidation tank 3, and the outlet of the ammonia nitrogen oxidation tank 3 is the inlet of the nitrate nitrogen reduction denitrification tank 4 , the outlet of the nitrate nitrogen reduction denitrification pool 4 is connected to the coagulation sedimentation tank 5; a hydrogen supply...

Embodiment 3

[0076] The modification example of a sewage treatment plant with a certain level A discharge standard in the north. Due to the low winter temperature in the north, the sewage water temperature is lower than 12 ℃, the removal effect of ammonia nitrogen and total nitrogen is poor, and the electrolysis machine and ammonia nitrogen are added after the contact disinfection tank of the original facility. Oxidation pool and nitrate nitrogen reduction denitrification pool. The structures of electrolysis machine 2, ammonia nitrogen oxidation pool 3, and nitrate nitrogen reduction denitrification pool 4 are as follows: figure 1 As shown, the discharge water of level A of the sewage plant is connected to the inlet of the electrolysis machine 2, the effluent of the electrolysis machine 2 is connected to the inlet of the ammonia nitrogen oxidation tank 3, and the outlet of the ammonia nitrogen oxidation tank 3 is the inlet of the nitrate nitrogen reduction denitrification tank 4 , the out...

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Abstract

The invention provides a municipal sewage treatment plant discharge water regeneration utilization apparatus and a municipal sewage treatment plant discharge water regeneration utilization method, andrelates to water pollution treatment. The apparatus is provided with a sewage lifting pump, an electrolysis machine, an ammonia nitrogen oxidation pool, a nitrate nitrogen reduction denitrification pool and a coagulation precipitation pool, wherein the inlet of the electrolysis machine is connected to two-stage precipitation pool second-stage B sewage effluent, the outlet of the electrolysis machine is connected to the inlet of the ammonia nitrogen oxidation pool, the outlet of the ammonia nitrogen oxidation pool is connected to the inlet of the nitrate nitrogen reduction denitrification pool, the outlet of the nitrate nitrogen reduction denitrification pool is connected to the inlet of the coagulation precipitation pool, the regenerated water outlet of the coagulation precipitation pooldischarges regenerated water, the sludge outlet of the ammonia nitrogen oxidation pool and the nitrate nitrogen reduction denitrification pool discharges sludge, and the outlet of hydrogen is connected to the nitrate nitrogen reduction denitrification pool. The method of the present invention comprises: electrolysis, ammonia nitrogen oxidation, nitrate nitrogen reduction and denitrification, and coagulation precipitation.

Description

technical field [0001] The invention relates to water pollution treatment, in particular to a device and method for reusing discharged water from a municipal sewage treatment plant. Background technique [0002] The relatively mature sewage treatment process of existing municipal sewage treatment plants is: water inflow→grid filtration→primary sedimentation tank→biochemical treatment→secondary sedimentation tank→disinfection tank→effluent, which can only meet the "Urban Wastewater Treatment Plant Pollutant Discharge Standard" 》(GB18918-2002) Class B standard effluent indicators, the indicators are shown in Table 1: [0003] Table 1 The maximum allowable emission concentration of basic control items (daily average value) [0004] serial number Basic Control Items Grade B standard (mg / L) 1 COD 60 2 BOD 20 3 SS 20 4 animal and vegetable oil 3 5 Petro 3 6 anionic surfactant 1 7 Total Nitrogen (as N) 20 8 Ammoni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F101/32C02F101/16
CPCC02F9/00C02F2209/10C02F2001/007C02F2301/08C02F3/06C02F2209/02C02F2209/16C02F2209/15C02F2209/14C02F1/5281C02F1/46104C02F2201/46135C02F2201/4614C02F2201/4615C02F1/72C02F2209/08C02F2209/06C02F1/66C02F2101/32C02F2209/18C02F2209/22C02F2303/04C02F1/50
Inventor 聂晓燕
Owner 皓禹(厦门)环保有限公司
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