Technology of cleaning reservoirs with the disposal of alloys and sludge in fertilizer.
Few people realize that when cleaning the lake from vegetation, algae, peat and sapropel (splavine), it throws out highly effective organo-mineral fertilizer that is so necessary for agriculture.
The center for sapropel offers a technological solution and equipment for cleaning overgrown reservoirs and natural lakes from vegetation and peat-sapropel deposits with their preparation and processing into paste-like or bulk fertilizers. In 2013, options for technological solutions for the integrated use of algae, vegetation, peat and sapropel extracted during the cleaning of lakes were offered especially for farms and small businesses.
The complex includes: a feasibility study of the business, equipment for cleaning the reservoir, preparation and processing of the recoverable mass into fertilizer mixtures and fertilizers.
Initially, a peat-silt deposit is probed on the lake, the depth and conditions of its occurrence, the quantity and range of vegetation are determined, and raw materials are sampled for laboratory analysis. The laboratory carries out a complete qualitative analysis of the alloy and peat-sapropelic silts. A conclusion is made about the suitability of plant material for the production of fertilizers, their formulation and production technology are recommended. It is important to calculate the stocks of plant and sludge raw materials in the reservoir in order to determine the size of the cleaning and processing equipment, its performance and configuration.
The ponds are cleaned by a mini-dredge, which allows the water surface to be cleared of vegetation, and the pond itself is cleaned from bottom silts, extracted and fed for preparation and processing. Preparation of the extracted sludge mass usually includes in itself its delivery to the shore and dehydration, drying to the required humidity, feeding the mass for processing and subsequent packing with the packaging of the finished product as a fertilizer for agriculture.
During the operation of the mini-dredge, a method of hydromechanical loosening of bottom sediments (as well as the surface vegetation layer of the reservoir to be cleaned) was used, and the resulting mixture was further transported up to 150 m from the dredger. The distance of transportation depends on the weight of the mixture being raised, the height of the rise and the speed of its movement along the flexible pipeline. The pulp consistency produced by the mixture should ensure its free movement along the entire length of the pipeline. On the frame (supporting platform) of the mini-equipment one gasoline motor pump (Champion, with a capacity of Q = 1800 l / min), and hydraulic pump station (Lifan, with a capacity of 22 l / min) with a control panel for the screw drive are mounted. The work of the pump is to remove from the bottom of the resulting mixture consisting of diffuse bottom sediments and small particles of the vegetable surface layer with its delivery to the shore. Mini-dredge in the pond moves with the help of the movement mechanism. Dredging is carried out according to the indications of the lag depth gauge.
In the mini kit, geotubs can be offered. In geotubes, the extracted mixture from the reservoir is dehydrated and stored until it is used for processing.
The processing of the alloy and bottom sludge is carried out after drying the raw materials to a certain humidity. To do this, use the natural climatic factor or dryer in the shop. The processing equipment consists of a grinder from a coarse to a fine fraction, a dispersing mill, and packing and packing equipment. Moreover, the resulting bulk fertilizers can then be encapsulated or tableted. For this, a roller press is used after grinding on a dispersant. Moreover, as a binder component tabletting or pressing you can use organic bottom sludge pond - sapropel.
The productivity of mining equipment is determined by the capabilities of the mini-dredge, the capacity of the processing complex is up to 20 m3 / cm.
The time parameters for launching the complex into operation: preparation of a feasibility study - not more than 1.3 months; manufacturing and supply of equipment - 3 months; installation and commissioning - 1 month;
Processing and packaging equipment of finished products in such a complex can cost from 3260 thousand rubles. up to 4250 thousand rubles. The total cost of the complex, taking into account the feasibility study - 4028 thousand rubles. up to 5018 thousand rubles.
Manufactured products meet the requirements of GOST. Packing bulk fertilizers - in bags of 10-50 liters, pelletized and encapsulated - in soft containers 500-2000 l.