CN104478161A

CN104478161A - Integrated biochemical wetland purification sewage treatment system

Info

Publication number: CN104478161A
Application number: CN201410693351.5A
Authority: CN
Inventors: 康壮武; 徐稍然
Original assignee: DONGGUAN LYUYUE ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd; DONGGUAN TIANQUAN ENVIRONMENTAL PROTECTION ELECTRICAL AND MECHANICAL ENGINEERING Co Ltd
Current assignee: DONGGUAN LYUYUE ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd; DONGGUAN TIANQUAN ENVIRONMENTAL PROTECTION ELECTRICAL AND MECHANICAL ENGINEERING Co Ltd
Priority date: 2014-11-27
Filing date: 2014-11-27
Publication date: 2015-04-01

Abstract

The invention discloses an integrated biochemical wetland purification sewage treatment system, relates to the technical field of environmental protection, and particularly relates to a wastewater treatment system for small country towns. The system is realized through the following technical scheme: sewage is purified through sewage interception with a pipe network, precipitation, adsorption, filtration, decomposition, fixation, ion exchange, complexation, nitrification and denitrification by using physical, chemical and biological synergy of matrix, aquatic plants and microbes in an ecological system. The system has the advantages of low investment cost, low operating cost, low maintenance technology, low power consumption, good effluent quality, water recycle and predominant environmental benefits, and particularly has a broad application prospect in sewage treatment construction of medium and small country towns of China.

Description

The biochemical wetland purification Sewage treatment systems of one

Technical field

The present invention relates to environmental protection technical field, refer in particular to Small Towns Waste Water Treatment.

Background technology

Along with the quickening of China's Essential For The Construction of Small Towns In Rural Areas speed, Small Towns sanitary sewage has a large capacity and a wide range.According to the preliminary statistics, within 2013, national Small Towns sanitary sewage quantity discharged is about 183.2 hundred million tons, and a large amount of pollution substance of sanitary sewage increases the weight of receiving water body and pollutes, and causes water body to worsen.Current China oneself enter high speed development stage of Development of China's Urbanization, the essence of urbanization is exactly allow samll cities and towns be developed.But the Development patterns of traditional treatment after pollution has run counter to the principle of Sustainable development, people do not recognize the seriousness of environmental pollution, the contradiction caused between environmental pollution and Economic development highlights day by day, and the environmental pollution that result in samll cities and towns and the pressure administering two aspects increase gradually.

Rural area and small towns do not have wastewater reuse approach facility substantially, the sanitary sewage disposal rate that samll cities and towns produce is zero substantially, human and animal excreta is because can not get dealing carefully with, fecal pollution thing can enter neighbouring water body indirectly along with rainfall runoff, the water source environment in the local rural area of severe contamination, this is also the important factor causing rural area pestilence.According to investigations, accounting for 20% rural urbanization periphery seldom has the above water body of 3 class water quality, and the subject to severe risks of damage of the special Midwest countryside wetland ecosystem, loses the function of original self purification of water body.With serious pollution indivedual area, shallow top layer, the main water source underground water of peasant's tap water also being polluted in various degree.Account for the vast rural area of national total area nearly 90%, environmental problem goes from bad to worse, and environmental pollution by water problem is particularly outstanding, presents rapid degradating trend.Along with the enforcement of Environmental Protection in China regulation, the waste water control work of current Small Towns enters the starting stage, but in fact still there is many problems.Small Towns domestic sewage treatment facility belongs to social benefit project, needs a large amount of public finance fund input, because local finance are more difficult, adds that environmental protection excludes development project, fund input wretched insufficiency, causes pollution treatment project to be difficult to carry out; Solve the problem, need to research and develop that a kind of construction cost is low, treatment effect good especially, run and without expense or low expense, the treatment technology that is applicable to samll cities and towns' disposal, Rural Water Pollution problem is administered.

Summary of the invention

The object of the invention is to overcome above-mentioned weak point of the prior art, and a kind of biochemical wetland purification Sewage treatment systems of one being widely used in sanitary sewage, acid mine drainage, agricultural effluent, heavy rain, town and country landscape water, Petroleum Industry waste water and eutrophication water is provided.

The present invention is achieved through the following technical solutions: cut dirt by pipe network, precipitation, absorption, filter, decompose, fixing, ion-exchange, complex reaction, nitrification and denitrification effect, the physics of---waterplant---microorganism that utilizes the matrix in the ecosystem, chemistry and biological triple synergies realize dirty water purification.

The present invention has that cost of investment is low, working cost is low, low maintenance technology, low power consumption, effluent quality are good, realize water cycle regeneration to utilize, the advantage that environmental benefit is outstanding, especially has broad application prospects in the Small Urban sewage disposal construction of China vast rural area.

Accompanying drawing illustrates:

Accompanying drawing is waste water processes figure of the present invention

Embodiment:

See accompanying drawing, the biochemical wetland purification Sewage treatment systems of one, comprises the steps:

One. pretreatment system: comprising

1). pipe network cuts dirt;

2). grid blocks dirt;

3). settling pit precipitates.

Two. high-efficient integrated biologic chemical treatment pool

First sewage cut dirt by official website and enter grating tank, and grating tank selects grid sewage-removing machine, and this equipment drags for the quantity of slag greatly, and slag dumping is thorough, in order to retain larger suspended substance or floating matter, as solid refuses such as fiber, broken bits, hair, pericarp, vegetables, plastics.

Horizontal flow type grit chamber selected by settling pit, Parallel Design, and a pond uses, and a pond is for subsequent use, mainly removes the precipitable suspended solid be suspended in sewage.

High-efficient integrated biologic chemical treatment pool has been concentrated biology, chemical reaction and has been deposited in a pond, the leading portion of outer ring is biological reaction tank, for the Activated Sludge Process of high loading, after sewage enters pond, organism is adsorbed or is decomposed in a short period of time, runs under aerobic state for making active sludge, inside there is micro-hole aerator, do oxygenation and stir, the oxygen in air being transferred on the active sludge flocs unit in mixed solution, for the need of microbial respiratory; Be chemical treatment pool after biological reaction tank, a small amount of chemical coagulator (PAC medicine and alkali) is thrown in pond, through mixing, reaction process, all form throw out after biology and chemical reaction after, the settling tank of Inner circle is all entered by pipeline, be provided with suction mud scraper in pond, sewage and mud carry out mud-water separation in settling tank.

Three. wetland purification system: the sewage after separation enters wetland purification system, comprising

1). artificial substratum;

Main with the granite grains of sand, viscosity sandy soil, soil, stone; The formation such as galleting or lime-ash.Matrix, while providing growth medium for plant and microorganism, directly removes pollutent by effects such as precipitation, filtration and absorption.

2). waterplant;

In wetland, growing plants is commonly referred to wetland plant, comprises emergent, submerged plant and floating plant.Large-scale emergent mainly plays fixed bed surface in artificial wet land system, provide good filtration condition, prevent wetland by siltation, provide good root district environment and winter operation to support ice face for microorganism.Such plant only plays an important role to the absorption of the nutritive substances such as N, P in the free flow surface constructed wetland that water yield processing power is less.Conventional emergent mainly contains reed, Rush, cattail etc., and some large-scale submerged plant, floating plant are also often used to artificial wet land system, as duckweed.The many plants planted in artificial swamp all have absorption, metabolism, cumulative function to pollutent, all there is inrichment to Al, Fe, Ba, Cd, Co, B, Cu, Mn, P, Bb, V, Zn, the growing way of general plant is better, ability that the larger  of density purifies water is stronger.

3). microbially decontaminate.

By oxygen delivery to root district.In root system of plant surrounding microenvironment, there will be aerobic zone, aerobic area and anaerobic zone successively, in waste water, most of organism can in aerobic zone by aerobic microbiological oxygenolysis.Utilize actinomycetes, phosphorus bacteria, thiobacterium, nitrite bacteria, nitrobacteria etc., decomposing organic matter matter, de-N play a role except in the process of P.

Above-mentioned wetland parameter is:

Hydraulic gradient: ﹥ 0.5 ~ 10 ﹪

Flow rate of water flow: ﹤ 0.7m ∕ s

The matrix degree of depth: 45 ~ 55cm.

Claims

1. the biochemical wetland purification Sewage treatment systems of one, comprising

One,

1). pipe network cuts dirt;

2). grid blocks dirt;

3). settling pit precipitates;

It is characterized in that: also comprise

Two,

High-efficient integrated biologic chemical treatment pool;

Three, wetland purification system.

2. the biochemical wetland purification Sewage treatment systems of one according to claim 1, it is characterized in that: described high-efficient integrated biologic chemical treatment pool has concentrated biology, chemical reaction be deposited in a pond, the leading portion of outer ring is biological reaction tank, for the Activated Sludge Process of high loading, after sewage enters pond, organism is adsorbed or is decomposed in a short period of time, run under aerobic state for making active sludge, inside there is micro-hole aerator, do oxygenation and stir, oxygen in air is transferred on the active sludge flocs unit in mixed solution, for the need of microbial respiratory, be chemical treatment pool after biological reaction tank, a small amount of chemical coagulator (PAC medicine and alkali) is thrown in pond, through mixing, reaction process, all form throw out after biology and chemical reaction after, the settling tank of Inner circle is all entered by pipeline, be provided with suction mud scraper in pond, sewage and mud carry out mud-water separation in settling tank.

3. the biochemical wetland purification Sewage treatment systems of one according to claim 1, is characterized in that: described wetland purification system, comprising

1). artificial substratum;

2). waterplant;

3). microbially decontaminate.

4. the biochemical wetland purification Sewage treatment systems of one according to claim 3, is characterized in that: described artificial substratum is mainly with the granite grains of sand, viscosity sandy soil, soil, stone; The formation such as galleting or lime-ash.

5. the biochemical wetland purification Sewage treatment systems of one according to claim 3, is characterized in that: described waterplant is reed, Rush, cattail and duckweed etc.

6. the biochemical wetland purification Sewage treatment systems of one according to claim 3, is characterized in that: described microorganism is actinomycetes, phosphorus bacteria, thiobacterium, nitrite bacteria, nitrobacteria etc.

7. the biochemical wetland purification Sewage treatment systems of one according to claim 3, is characterized in that: described wetland parameter is:

Hydraulic gradient: ﹥ 0.5 ~ 10 ﹪

Flow rate of water flow: ﹤ 0.7m ∕ s

The matrix degree of depth: 45 ~ 55cm.