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Sewage treatment system

A sewage treatment system and sewage technology, applied in biological water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem that the sewage purification effect is greatly affected by temperature and cannot be applied well For problems such as alpine regions, achieve the effects of strong operability and applicability, control of adverse effects, and stable water output.

Inactive Publication Date: 2017-11-24
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purification effect of these methods on sewage is greatly affected by temperature, so they cannot be well applied in alpine regions

Method used

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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, the system mainly includes an anaerobic digester 2, a biofilter 9 and an artificial wetland 14 above the biofilter; the anaerobic digester is buried and has a heating layer on the outer wall, and a biogas collection pipe is arranged on the top , solar panels, the collected biogas and solar energy are used for heat production to heat the anaerobic digester to accelerate the digestion and hydrolysis process; the biofilter 9 and the artificial wetland 14 are separated by a porous partition 13, and the interior of the biofilter 9 is composed of From bottom to top, there are water intake area, filter head 10, aeration pipe 11, packing layer 12 and clear water area. The planting substrate of the artificial wetland is pebbles and cinders, and the thickness of the substrate is 20cm. Local cold-resistant plants are planted on it, preferably reed, calamus, One or more kinds of Ophiopogon japonicus.

[0031] The specific processing steps are:

[0032] ...

Embodiment 2

[0041] The system described in Example 1 was adopted, and domestic sewage from a certain area of ​​Lulang Town, Bayi District, Nyingchi City, Tibet Autonomous Region was used as the water inflow, and the system was operated for 100 days respectively in summer and winter. Sampling ports are set in the main water inlet pipe and the main water outlet pipe respectively, and water samples are taken every 25 days, and the COD, NH 3 -N, TN and TP for detection. Detailed embodiment result sees figure 2As shown, in the case of large fluctuations in influent water quality, the system can reach the GB18918-2002 Grade A standard when the summer domestic sewage is used as the influent during the long-term operation of the system for 200 days, and the winter domestic sewage is used as the influent , the water can reach the GB18918-2002 level B standard.

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Abstract

The invention discloses a dispersive household sewage treatment system for high and cold areas. The system comprises an anaerobic digester, a biofilter and an artificial wetland. Household sewage enters the anaerobic digester through a water inlet manifold, enters into the biofilter through a water outlet tube after hydrolytic acidification, and the sewage is uniformly distributed in a filter material through a filter head, so that a biofilm where the sewage is adhered to the surface of the filter material is in full contact for purification; an effluent enters the artificial wetland through a porous partition plate and is further purified and discharged through a water outlet manifold; and the anaerobic digester is of a pre-buried steel concrete structure. A biogas collecting tube and a solar top cover are arranged on the top of the digester. The biogas collecting tube is connected to a biogas capacity system, the solar top cover is connected to a solar heater, and produced heat is used for heating the anaerobic digester. Exhaust gas discharged by the biogas capacity system is introduced into the artificial wetland, the raw materials are provided for photosynthesis of planted crops while the temperature in the shed of the artificial wetland is increased by applying greenhouse gas, and growth of the crops of the artificial wetland is promoted.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a treatment system suitable for distributed domestic sewage in alpine regions. Background technique [0002] With the rapid development of my country's economy and the continuous increase of population, the problem of water pollution is becoming more and more serious. For a long time, the lack of effective control technology and management means for rural domestic pollution has led to the random discharge of a large amount of untreated rural domestic sewage, and the problem of water environment pollution in the vast rural areas has become increasingly prominent. However, more than 90% of villages across the country do not have sewage collection and treatment systems, making centralized treatment difficult. [0003] Decentralized domestic sewage has the characteristics of small water volume, high organic matter concentration, high nitrogen and phosphorus conc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F3/00C02F3/28C02F3/32C02F9/00Y02W10/37
Inventor 李轶熊维张文龙张杉雪孙月
Owner HOHAI UNIV
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