Tangshan, Hebei - MVR forced circulation evaporator system project case

Basic information about the project
Project Name: Tangshan Jian Zigu landfill environmental management project services
Service standard requirements:
(1) Treatment scale: This project mainly uses physical and chemical methods to fully treat sewage, with a sewage treatment capacity of 50,000 tons and a daily discharge of 500 tons/day (standard water production rate ≥95%).
(2) Sewage treatment project requirements: The successful bidder shall complete all works within the scope of sewage service treatment within 110 days after the signing of the contract, including transformers, civil distribution facilities, pipelines, power and control cables, distribution cabinets, automatic control cabinets, instrument cabinets, grounding systems, dosing tanks and filters, etc., and shall be responsible for supply, installation and commissioning.
(3) Emission standards: The conventional factor of treated sewage meets the level 3 standard in Table 4 of the Comprehensive Sewage Discharge Standard (GB8978-1996) and the influent water quality requirements of Chengnan Sewage Treatment Plant in Fengnan District, and the heavy metal factor meets the standard requirements in Table 3 of the Control Standard of Domestic Waste Landfill Site (GB16889-2008). It is discharged into Chengnan Sewage Treatment plant of Fengnan District through underground pipe network.

Process characteristics

• 1. Process principle

MVR is short for mechanical vapor recompression technology. The MVR evaporator is an energy-saving technology that reuses the energy of the secondary steam generated by itself, thereby reducing the need for external energy.
The mechanical compressor (or fan) is used to re-compress the secondary steam after evaporation to increase its enthalpy value, and the secondary steam after the enthalpy is re-sent to the heating chamber as a heat source to heat the feed, and the heat transfer phase change becomes condensate water discharge. The heated material is vaporized and concentrated as the final product discharge system.

• 2. Features

(1) MVR energy-saving evaporator only needs a very small amount of steam, greatly reducing operating costs and reducing environmental pollution. No waste heat steam discharge, energy saving effect is very significant.
(2) Due to the use of compressor to provide heat source, compared with the traditional evaporator, the temperature difference is much smaller, can achieve mild evaporation, greatly improve product quality, reduce scaling.
(3) The structure and process are very simple, fully automatic operation, continuous operation, safe and reliable.
(4) The equipment is equipped with CIP cleaning pipeline, which can realize on-site cleaning, and the whole equipment is convenient to operate and has no dead corners. No waste heat steam discharge, energy saving effect is very significant.
(5) Where single-effect and multi-effect evaporator applicable materials, are suitable for the use of MVR evaporator, in technology has a complete substitutable, and has better environmental protection and energy saving characteristics.